QGIS API Documentation 3.37.0-Master (c2d15952569)
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qgs3dutils.h
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1/***************************************************************************
2 qgs3dutils.h
3 --------------------------------------
4 Date : July 2017
5 Copyright : (C) 2017 by Martin Dobias
6 Email : wonder dot sk at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGS3DUTILS_H
17#define QGS3DUTILS_H
18
19class QgsLineString;
20class QgsPolygon;
21class QgsFeedback;
22
25class Qgs3DMapScene;
28
29namespace Qt3DExtras
30{
31 class QPhongMaterial;
32}
33
34#include "qgs3dmapsettings.h"
36#include "qgs3dtypes.h"
37#include "qgsaabb.h"
38#include "qgsray3d.h"
40
41#include <QSize>
42#include <Qt3DRender/QCamera>
43#include <Qt3DRender/QCullFace>
44
45#include <memory>
46
47#define SIP_NO_FILE
48
49
55class _3D_EXPORT Qgs3DUtils
56{
57 public:
58
64 static QImage captureSceneImage( QgsAbstract3DEngine &engine, Qgs3DMapScene *scene );
65
74 static QImage captureSceneDepthBuffer( QgsAbstract3DEngine &engine, Qgs3DMapScene *scene );
75
81 static double calculateEntityGpuMemorySize( Qt3DCore::QEntity *entity );
82
101 static bool exportAnimation( const Qgs3DAnimationSettings &animationSettings,
102 Qgs3DMapSettings &mapSettings,
103 int framesPerSecond,
104 const QString &outputDirectory,
105 const QString &fileNameTemplate,
106 const QSize &outputSize,
107 QString &error,
108 QgsFeedback *feedback = nullptr
109 );
110
115 static int maxZoomLevel( double tile0width, double tileResolution, double maxError );
116
118 static QString altClampingToString( Qgis::AltitudeClamping altClamp );
120 static Qgis::AltitudeClamping altClampingFromString( const QString &str );
121
123 static QString altBindingToString( Qgis::AltitudeBinding altBind );
125 static Qgis::AltitudeBinding altBindingFromString( const QString &str );
126
128 static QString cullingModeToString( Qgs3DTypes::CullingMode mode );
130 static Qgs3DTypes::CullingMode cullingModeFromString( const QString &str );
131
133 static float clampAltitude( const QgsPoint &p, Qgis::AltitudeClamping altClamp, Qgis::AltitudeBinding altBind, float offset, const QgsPoint &centroid, const Qgs3DMapSettings &map );
135 static void clampAltitudes( QgsLineString *lineString, Qgis::AltitudeClamping altClamp, Qgis::AltitudeBinding altBind, const QgsPoint &centroid, float offset, const Qgs3DMapSettings &map );
137 static bool clampAltitudes( QgsPolygon *polygon, Qgis::AltitudeClamping altClamp, Qgis::AltitudeBinding altBind, float offset, const Qgs3DMapSettings &map );
138
140 static QString matrix4x4toString( const QMatrix4x4 &m );
142 static QMatrix4x4 stringToMatrix4x4( const QString &str );
143
145 static void extractPointPositions( const QgsFeature &f, const Qgs3DMapSettings &map, Qgis::AltitudeClamping altClamp, QVector<QVector3D> &positions );
146
151 static bool isCullable( const QgsAABB &bbox, const QMatrix4x4 &viewProjectionMatrix );
152
154 static QgsVector3D mapToWorldCoordinates( const QgsVector3D &mapCoords, const QgsVector3D &origin );
156 static QgsVector3D worldToMapCoordinates( const QgsVector3D &worldCoords, const QgsVector3D &origin );
157
162 static QgsAABB layerToWorldExtent( const QgsRectangle &extent, double zMin, double zMax, const QgsCoordinateReferenceSystem &layerCrs, const QgsVector3D &mapOrigin, const QgsCoordinateReferenceSystem &mapCrs, const QgsCoordinateTransformContext &context );
163
168 static QgsRectangle worldToLayerExtent( const QgsAABB &bbox, const QgsCoordinateReferenceSystem &layerCrs, const QgsVector3D &mapOrigin, const QgsCoordinateReferenceSystem &mapCrs, const QgsCoordinateTransformContext &context );
169
174 static QgsAABB mapToWorldExtent( const QgsRectangle &extent, double zMin, double zMax, const QgsVector3D &mapOrigin );
175
180 static QgsRectangle worldToMapExtent( const QgsAABB &bbox, const QgsVector3D &mapOrigin );
181
183 static QgsVector3D transformWorldCoordinates( const QgsVector3D &worldPoint1, const QgsVector3D &origin1, const QgsCoordinateReferenceSystem &crs1, const QgsVector3D &origin2, const QgsCoordinateReferenceSystem &crs2,
184 const QgsCoordinateTransformContext &context );
185
193 static void estimateVectorLayerZRange( QgsVectorLayer *layer, double &zMin, double &zMax );
194
196 static QgsExpressionContext globalProjectLayerExpressionContext( QgsVectorLayer *layer );
197
199 static QgsPhongMaterialSettings phongMaterialFromQt3DComponent( Qt3DExtras::QPhongMaterial *material );
200
202 static QgsRay3D rayFromScreenPoint( const QPoint &point, const QSize &windowSize, Qt3DRender::QCamera *camera );
203
208 static QVector3D screenPointToWorldPos( const QPoint &screenPoint, double depth, const QSize &screenSize, Qt3DRender::QCamera *camera );
209
214 static void pitchAndYawFromViewVector( QVector3D vect, double &pitch, double &yaw );
215
222 static QVector2D screenToTextureCoordinates( QVector2D screenXY, QSize winSize );
223
230 static QVector2D textureToScreenCoordinates( QVector2D textureXY, QSize winSize );
231
238 static double decodeDepth( const QRgb &pixel )
239 {
240 return ( ( qRed( pixel ) / 255.0 + qGreen( pixel ) ) / 255.0 + qBlue( pixel ) ) / 255.0;
241 }
242
248 static std::unique_ptr< QgsPointCloudLayer3DRenderer > convert2DPointCloudRendererTo3D( QgsPointCloudRenderer *renderer );
249
257 static QHash<QgsMapLayer *, QVector<QgsRayCastingUtils::RayHit>> castRay( Qgs3DMapScene *scene, const QgsRay3D &ray, const QgsRayCastingUtils::RayCastContext &context );
258
270 static QgsRectangle tryReprojectExtent2D( const QgsRectangle &extent, const QgsCoordinateReferenceSystem &crs1, const QgsCoordinateReferenceSystem &crs2, const QgsCoordinateTransformContext &context );
271
283 static float screenSpaceError( float epsilon, float distance, int screenSize, float fov );
284
297 static void computeBoundingBoxNearFarPlanes( const QgsAABB &bbox, const QMatrix4x4 &viewMatrix, float &fnear, float &ffar );
298
306 static Qt3DRender::QCullFace::CullingMode qt3DcullingMode( Qgs3DTypes::CullingMode mode );
307};
308
309#endif // QGS3DUTILS_H
AltitudeClamping
Altitude clamping.
Definition qgis.h:3216
AltitudeBinding
Altitude binding.
Definition qgis.h:3229
CullingMode
Triangle culling mode.
Definition qgs3dtypes.h:36
static double decodeDepth(const QRgb &pixel)
Decodes the depth value from the pixel's color value The depth value is encoded from OpenGL side (the...
Definition qgs3dutils.h:238
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition qgsfeature.h:56
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition qgsfeedback.h:44
Line string geometry type, with support for z-dimension and m-values.
3D renderer that renders all points from a point cloud layer
Abstract base class for 2d point cloud renderers.
Point geometry type, with support for z-dimension and m-values.
Definition qgspoint.h:49
Polygon geometry type.
Definition qgspolygon.h:33
A representation of a ray in 3D.
Definition qgsray3d.h:31
A rectangle specified with double values.
Class for storage of 3D vectors similar to QVector3D, with the difference that it uses double precisi...
Definition qgsvector3d.h:31
Represents a vector layer which manages a vector based data sets.
#define str(x)
Definition qgis.cpp:38